Observation data Epoch J2000.0 Equinox J2000.0 | |
---|---|
Constellation | Taurus |
Right ascension | 03h 45m 12.49578s[1] |
Declination | 24° 28′ 02.2097″[1] |
Apparent magnitude (V) | 4.30[2] |
Characteristics | |
Spectral type | B6IV + ?[3] |
U−B color index | -0.48[4] |
B−V color index | -0.12[4] |
Astrometry | |
Radial velocity (Rv) | 10.1[2] km/s |
Proper motion (μ) | RA: 21.24 ± 0.38[1] mas/yr Dec.: -40.56 ± 0.35[1] mas/yr |
Parallax (π) | 7.97±0.33 mas[1] |
Distance | 440 ly (135 pc) |
Details | |
Taygeta | |
Mass | 4.41±0.09[5] M☉ |
Radius | 4.36±0.14[5] R☉ |
Luminosity | 600[6] L☉ |
Surface gravity (log g) | 3.772±0.113[5] cgs |
Temperature | 13,696±222[5] K |
Rotational velocity (v sin i) | 105±16[5] km/s |
19 Tauri Ab | |
Mass | 3.2[6] M☉ |
Luminosity | 150[6] L☉ |
Surface gravity (log g) | 4.2[5] cgs |
Temperature | 8,306[5] K |
Other designations | |
q Tauri, HR 1145, HD 23338, BD+24°547, HIP 17531, SAO 76140, GC 4486, BDS 1848, CCDM 03452+2429 | |
Database references | |
SIMBAD | data |
Taygeta is a double star in the constellation of Taurus and a member of the Pleiades open star cluster (M45).
It consists of a binary pair designated 19 Tauri A together with a single star visual companion, 19 Tauri B. 'A's' two components are themselves designated 19 Tauri Aa (officially named Taygeta /teɪˈɪdʒətə/,[7] the traditional name for the entire system)[8] and Ab.
Based on parallax measurements obtained during the Hipparcos mission, 19 Tauri A is approximately 440 light-years from the Sun.
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